Pressure-Induced Shifts of R1 and R2 Lines of YAG：Cr3＋  

作　　者：ZHANG Zheng-Jie MA Dong-Ping 

机构地区：[1]College of Information Engineering, Chengdu University of Technology, Chengdu 610059, China [2]Department of Applied Physics, Sichuan University, Chengdu 610065, China

出　　处：《Communications in Theoretical Physics》2006年第4期754-760,共7页理论物理通讯（英文版）

摘　　要：By means of improved ligand-field theory, the ＂pure electronic＂ pressure-induced shifts （PS＇s） and the PS＇s due to electron-phonon interaction （EPI） of R1 line and R2 line of YAG：Cr^3＋ have been calculated, respectively. The calculated results are in very good agreement with the experimental data. It is demonstrated that the admixture of │t^2 2（^3T1）e^4T2〉 and │t^3 2 ^2E〉 bases in the wavefunction of RI level of YAG：Crs＋ and its change with pressure play a key role for the PS of RI line. The behaviors of the ＂pure electronic＂ PS of RI line and the PS of RI line due to EPI are different. It is the combined eEect of them that gives rise to the total PS of R1 line, which has satisfactorily explained the experimental results. The systematic analyses and comparisons between the feature of R1-line PS of YAG：Cr^3＋ and the ones of three laser crystals （GSGG：Cr^3＋, GGG：Cr^3＋ and ruby） have been made, and the origin of the difference between them has been revealed.

关 键 词：high-pressure effect electron-phonon interaction R lines admixture of ｜t22（3T1）e4T2〉 and ｜t322E〉 laser crystals 

分 类 号：O562[理学—原子与分子物理] TN24[理学—物理]